Installation Guide, Third Edition - Server Expansion Unit

Chapter 4

Cabling and Power Up

Connecting AC Input Power

If two separate power sources are available, the two power supplies can be plugged into the separate power

sources, increasing system reliability should one power source fail.

The AC input for power receptacle A0 connects to both BPS 0 and BPS 1. The AC input for power receptacle

B0 connects to both BPS 0 and BPS 1. Refer to Figure 4-39 for details.

Figure 4-39 Power Source versus Power Distribution

WARNING Voltage is present at various locations within the Server Expansion Unit whenever a

power source is connected. This voltage is present even when the main power switch

is in the OFF position. To completely remove power, both power cords must be

removed from the Server Expansion Unit. Failure to observe this warning could

result in personal injury or damage to equipment.

Step 1. Insert the power cords into the Server Expansion Unit after the voltage has been verified using the

“Voltage Check” on page 75. Do not press the power switch yet.

Step 2. Ensure the power cords are inserted in the server. Do not press the power switch yet.

Step 3. Continue with the “MP Core I/O Connections” on page 82.

*200-240 VAC

220 VAC*

BPS 1

BPS 0

Rear of Server Expansion Unit